Programming Contours | Path contours Cartesian coordinates
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HEIDENHAIN | TNC 320 | ISO Programming User's Manual | 10/2017
267
Circular path around circle center
Before programming a circular arc, you must first enter the circle
center I, J. The last programmed tool position will be the starting
point of the arc.
Direction of rotation
In clockwise direction: G02
In counterclockwise direction: G03
Without programmed direction: G05. The control traverses the
circular arc with the last programmed direction of rotation.
Move the tool to the circle starting point
Enter the coordinates of the circle center
Enter the coordinates of the arc end point, and if
necessary:
Feed F
Miscellaneous function M
The control normally makes circular movements in the
active working plane. However, you can also program
circular arcs that do not lie in the active working plane.
By simultaneously rotating these circular movements
you can create spatial arcs (arcs in three axes), e.g. G2
Z... X... (with tool axis Z).
Example
N50 I+25 J+25*
N60 G01 G42 X+45 Y+25 F200 M3*
N70 G03 X+45 Y+25*
Full circle
For the end point, enter the same point that you used for the
starting point.
The starting and end points of the arc must lie on the
circle.
The maximum value for input tolerance is 0.016 mm.
Set the input tolerance in the machine parameter
circleDeviation (no. 200901).
Smallest possible circle that the control can traverse:
0.016 mm.
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